let SYSTEM_INFO = uni.getSystemInfoSync()

export const statusBarHeight = () => SYSTEM_INFO.statusBarHeight || 15 

export const getTitleBarHeight = () => {
	if (uni.getMenuButtonBoundingClientRect) {
		let {
			top,
			height
		} = uni.getMenuButtonBoundingClientRect()
		return (top - SYSTEM_INFO.statusBarHeight) * 2 + height
	} else {
		return 40;
	}
}

export const getNavBarHeight = () => statusBarHeight()	 + getTitleBarHeight()

export const getLeftIcon = () => {
	// #ifdef MP-TOUTIAO
	let {
		leftIcon: {
			left,
			width
		}
	} = tt.getCustomButtonBoundingClientRect()
	return left + parseInt(width)
	// #endif

	// #ifndef MP-TOUTIAO
	return 0
	// #endif

}